38. 最多购买宝石数目

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});
let input = [];
rl.on('line', function(input) {
    input.push(line);
})
rl.on('close', () => {
    const n = parseInt(input[0]);
    const gems = input.slice(1, n+1).map(Number);
    const value = parseInt(input[n+1]);

    let left = 0;
    let right =0;
    let sum = 0;
    let maxT = 0;
    while(right < gems.length) {
        sum += gems[right];
        while(sum > value) {
            sum -= gems[left];
            left++;
        }
        maxT = Math.max(maxT, right - left + 1);
        right++;
    }
    console.log(maxT);
})